CN101358253A - Technique for preparing chrome-free tanning and plant-free tanning goat upper leather - Google Patents
Technique for preparing chrome-free tanning and plant-free tanning goat upper leather Download PDFInfo
- Publication number
- CN101358253A CN101358253A CNA2008101960065A CN200810196006A CN101358253A CN 101358253 A CN101358253 A CN 101358253A CN A2008101960065 A CNA2008101960065 A CN A2008101960065A CN 200810196006 A CN200810196006 A CN 200810196006A CN 101358253 A CN101358253 A CN 101358253A
- Authority
- CN
- China
- Prior art keywords
- tanning
- tanning agent
- consumption
- agent
- preferred
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010985 leather Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 241000283707 Capra Species 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000003352 sequestering agent Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- 229910001385 heavy metal Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000002427 irreversible effect Effects 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 7
- 229960001922 sodium perborate Drugs 0.000 abstract 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 210000001161 mammalian embryo Anatomy 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a production process for goat free-chrome and no-vegetable tanned vamp leather, which comprises the steps of rewatering, tanning, alkaline extracting, oxidating, rinsing, neutralizating, retanning and filling, oiling and fixing. The production process is characterized in that the tanning process adopts phosphorus tanning agents to replace the chrome tanning agents with heavy pollution, which are adopted in the industry, the solution PH is increased to 5.0 to 5.5 by alkali liquor to fix the phosphorus tanning agent, the uncombined tanning agent is further fixed by using sodium perborate; the synthesized tanning agents such as synthesized tanning agents, resin tanning agents, etc. rather than the current used chrome tanning agents are adopted to retan during retanning. The invention overcomes the current situation of serious chrome pollution in the leather manufacturing industry, the leather body of the made free-chrome no-vegetable tanned goat vamp leather is full, soft and elastic, the grain surface is neat and fine, the shrinking temperature of crust leather can reach to 92 DEG C, all the other physical and mechanical properties meet the requirements for the goat vamp property, and moreover, the wastes which are produced during the production process can be degradated to achieve the emission without pollution.
Description
Technical field
The present invention relates to the complete processing of leather, relate to a kind of production technique of chrome-free tanning and plant-free tanning goat upper leather specifically.
Background technology
Traditional leather adopts chromium to make tanning agent more, and the chrome tanned leather that processing makes has anti-high humidity, Heat stability is good, and the leather body is plentiful, advantages such as softness.But because chromium ore resource is limited, people press for and seek a kind of substitute.And toxic because of sexavalent chrome remaining in the process hides process, the chrome tanning process can cause severe contamination to environment, still is difficult at present prevent and treat effectively.Therefore, in people's pay attention to day by day living environment, pay close attention under the situation of using the environmental protection leather, developing no chrome tanning leather has become inexorable trend.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of production technique of chrome-free tanning and plant-free tanning goat upper leather, the pollution of chromium problem in the solution process hides process and the bioid degraded of process hides gained clout.
The present invention is achieved through the following technical solutions: a kind of production technique of chrome-free tanning and plant-free tanning goat upper leather, may further comprise the steps (from sour skin): backwater, tanning, carry alkali, oxidation, rinsing, neutralization, retanning fill, refuel, fixing, it is characterized in that, tannery adds phosphorus tanning agent, sequestrant, with alkali lye pH value of solution is adjusted to 5.0-5.5, fixedly the phosphorus tanning agent;
Described phosphorus tanning agent is selected from the arbitrary of GRANOFIN FCC, DT-T800, preferred FCC, and consumption is 2%, be 3h action time; Described alkali is Na
2CO
3Perhaps NaHCO
3, preferred NaHCO
3, consumption is 1.5%, be 200min action time;
In described oxidation step, add Sodium peroxoborate, further fixing to guarantee unconjugated tanning agent, and irreversible; Described Sodium peroxoborate consumption is 0.6%, and be 1h action time.
Described retanning filling step carries out in 35 ℃ water; add sequestrant except that the heavy metal in anhydrating; the grain that adds sulfonated fatting agent protection skin; dredge the passage that following retanning material enters intracutaneous; add the retanning material subsequently: maleic anhydride tanning agent, 1# white tanning agent, 1# synthetic tanning agent, 2# synthetic tanning agent, diffusant, 2# white tanning agent, resin tanning agent, 3# white tanning agent, zirconium tanning agent; reaction continues 60min, to increase the plentiful pliability of skin body, alleviates loose side.
In the retanning step, described sequestrant is selected from the arbitrary of DT-A101, TRUKALIN K, BORRON ST, preferred A101, and consumption is 0.5%, be 5min action time;
Described sulfonated fatting agent is selected from the arbitrary of INGRASSANE H50, REKOIL NL, SANDOLIXBUP, preferred H50, and consumption is 0.5%, be 20min action time;
Described pigment paste is selected from any of A-95, NEOSAN 2000WHITE, NEOSAN WHITE B, preferred A-95, and consumption is 2%;
Described maleic anhydride tanning agent is selected from the arbitrary of RETAN TC, INTAN EMS, TERGOTAN S;
Described 1# white tanning agent is selected from any of BLANCOROL BC, BASYNTAN DLE, RETAN 836, TANNIGAN 3LN, preferred BC, and consumption is 6%;
Described 1# synthetic tanning agent is selected from the arbitrary of HLF, RL, INTAN806, preferred HLF, and consumption is 4%;
Described 2# synthetic tanning agent is selected from the arbitrary of HLF, RL, INTAN806, preferred RL, and consumption is 4%;
Described diffusant is selected from TOMAL NNOL or TOMAL NNO, preferred NNOL, and consumption is 1%;
The 2# white tanning agent is selected from any of BLANCOROL BC, BASYNTAN DLE, RETAN 836, TANNIGAN 3LN, preferred DLE, and consumption is 5%;
Resin tanning agent is TB, and consumption is 4%;
The 3# white tanning agent is selected from any of BLANCOROL BC, BASYNTAN DLE, RETAN 836, TANNIGAN 3LN, preferred BC, and consumption is 5%;
Described zirconium tanning agent is selected from the arbitrary of DT-T6015, BLANCOROL ZB33, DT-T602, DT-T6035, preferred ZB33, and consumption is 2%.
The invention has the beneficial effects as follows: the present invention adopts the phosphorus tanning agent to replace the chrome tanning agent of heavy contamination, overcome the serious present situation of leather production pollution of chromium, reach non-pollution discharge, the goat NCNV upper leather leather body that makes is plentiful, and softness is flexible, grain is smooth, careful, embryo leather shrinkage temperature reaches 92 degree, and other physical and mechanical propertiess all reach the performance requriements of goat upper leather for shoes.
Embodiment
A kind of production technique of goat chrome-free tanning free tanning and plant upper leather may further comprise the steps (from sour skin): backwater, tanning, carry alkali, oxidation, rinsing, neutralization, retanning fill, refuel, fixing.
Rinse cycle uses oxalic acid to wash the foul on skin surface off, adds grease-removing agent to take off grease unnecessary in the leather, and the adding sequestrant is removed the heavy metal in the solution;
Neutralization procedure adopts neutralizing agent to improve the pH value of skin, fills with the retanning that adapts to the back;
Fueling procedure is the pliability of removing from office body in order to improve, and improves the physicals of skin, and the temperature of oiling is 45 degree, and the adding protein filling makes more uniformity of whole Zhang Geshen to fill the limit belly of skin before refueling.
Fixing step further increases combination.
To describe the specific embodiment of the present invention in detail below:
Embodiment 1
Operation consumption % materials temperature/℃ time remarks
Backwater: (below the per-cent mentioned all calculate) with the weight behind the weight weightening finish 50%-100% of sour skin
Acid tare weight 150%～200%
30 ℃ in 100% water
10% Industrial Salt 5min controls Be ° of 6.5-7.
Tanning:
0.3％ NaCO
3 30min
0.2% DT-A101 (sequestrant) 5min
2% FCC (phosphorus tanning agent) 3h per hour changeed mistake five minutes
Night, inferior day operation 20min
Carry alkali:
1.5% DP (masking agent) 30min
1.5% sodium bicarbonate (20+20+20+20) min+2h
Survey Ts＞83 ℃
1% SG (phenolic tanning agent) 30min
Washing
Oxidation:
100% water normal temperature
0.6% Sodium peroxoborate 1h
Wash, go out skin, take horse, leave standstill, water squeezing next day, shaving are weighed and are made following materials foundation
Rinsing:
35 ℃ in 200% water
1% oxalic acid
0.5% S008 (grease-removing agent)
0.2% A101 (sequestrant) 30min
Washing
Neutralization:
35 ℃ in 200% water
2% PAK-N-C (neutralizing agent) 40min
3% TB (vinylformic acid tanning agent) 30min
Washing
Retanning,
Fill:
35 ℃ in 100% water
0.5% A101 (sequestrant) 5min
0.5% H50 (sulfonated fatting agent) 20min
2% A-95 (pigment paste)
5% TC (maleic anhydride tanning agent)
6% BC (white tanning agent)
4% HLF (synthetic tanning agent)
4% RL (synthetic tanning agent)
1% NNOL (diffusant) 60min
5% DLE (white tanning agent)
4% TB (resin tanning agent)
5% BC (white tanning agent) 60min
2% ZB33 (zirconium tanning agent) 30min
35 ℃ of 30min of 100% water per hour changeed five minutes
Spend the night inferior day operation
20min, washing
Refuel:
40 ℃ in 200% water
0.2％ A101 5min
3% FTG (protein filling)
1% B (protein filling) 20min
2% H50 (sulfonated fatting agent)
2% BO-009 (Synthetic Oil)
0.1% 2230 (mould inhibitor) 60min
3% RV (resin tanning agent)
3% PMB (resin tanning agent) 40min
3% SC (resin tanning agent) 50min
Fixing:
2% formic acid (20+20) min
Washing:
40 ℃ in 200% water
0.5% SI (cation oil) 20min
Washing, go out skin, take horse, leave standstill, water squeezing stretching, extension next day, vacuum, extension dry dry, receive skin leave standstill, get damp again leave standstill, vibrate draw soft, repair curved, toggling, deburring, hand over and cover with paint, lacquer, colour wash, etc.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (5)
1, a kind of production technique of chrome-free tanning and plant-free tanning goat upper leather, may further comprise the steps (from sour skin): backwater, tanning, carry alkali, oxidation, rinsing, neutralization, retanning fill, refuel, fixing, it is characterized in that, tannery adds phosphorus tanning agent, sequestrant, with alkali lye pH value of solution is adjusted to 5.0-5.5, fixedly the phosphorus tanning agent;
In described oxidation step, add Sodium peroxoborate, further fixing to guarantee unconjugated tanning agent, and irreversible;
Described retanning filling step carries out in 35 ℃ water; add sequestrant except that the heavy metal in anhydrating; the grain that adds sulfonated fatting agent protection skin; dredge the passage that following retanning material enters intracutaneous; add pigment paste, add the retanning material subsequently: maleic anhydride tanning agent, 1# white tanning agent, 1# synthetic tanning agent, 2# synthetic tanning agent, diffusant, 2# white tanning agent, resin tanning agent, 3# white tanning agent, zirconium tanning agent, reaction continues 60min; to increase the plentiful pliability of skin body, alleviate loose side.
2, the production technique of a kind of goat chrome-free tanning free tanning and plant upper leather according to claim 1 is characterized in that in the tannery, described phosphorus tanning agent GRANOFIN FCC or DT-T800, and described alkali is Na
2CO
3Perhaps NaHCO
3, described Sodium peroxoborate consumption is 0.6%, be 1h action time.
3, the production technique of a kind of goat chrome-free tanning free tanning and plant upper leather according to claim 1 and 2 is characterized in that in the tannery, the preferred FCC of described phosphorus tanning agent, and consumption is 2%, be 3h action time; The preferred NaHCO of described alkali
3, consumption is 1.5%, be 200min action time.
4, the production technique of a kind of goat chrome-free tanning free tanning and plant upper leather according to claim 1 is characterized in that in the described retanning step, described sequestrant is selected from the arbitrary of DT-A101, TRUKALIN K, BORRON ST; Described sulfonated fatting agent is selected from the arbitrary of INGRASSANE H50, REKOILNL, SANDOLIX BUP; Described pigment paste is selected from any of A-95, NEOSAN 2000WHITE, NEOSAN WHITE B; Described maleic anhydride tanning agent is selected from the arbitrary of RETAN TC, INTANEMS, TERGOTAN S; Described white tanning agent is selected from any of BLANCOROL BC, BASYNTANDLE, RETAN 836, TANNIGAN 3LN; Described synthetic tanning agent is selected from the arbitrary of HLF, RL, INTAN806; Described diffusant is selected from TOMAL NNOL or TOMAL NNO; Described resin tanning agent is TB, and consumption is 4%; Described zirconium tanning agent is selected from the arbitrary of DT-T6015, BLANCOROL ZB33, DT-T602, DT-T6035.
5, according to the production technique of claim 1 or 4 described a kind of goat chrome-free tanning free tanning and plant upper leathers, it is characterized in that in the described retanning step, the preferred A101 of described sequestrant, consumption are 0.5%, be 5min action time; The preferred H50 of described sulfonated fatting agent, consumption is 0.5%, be 20min action time; The preferred A-95 of described pigment paste, consumption are 2%; The preferred TC of described maleic anhydride tanning agent, consumption is 5%; The preferred BC of described 1# white tanning agent, consumption is 6%; The preferred HLF of described 1# synthetic tanning agent, consumption is 4%; The preferred RL of described 2# synthetic tanning agent, consumption is 4%; The preferred NNOL of described diffusant, consumption are 1%; The preferred DLE of described 2# white tanning agent, consumption is 5%; The preferred BC of described 3# white tanning agent, consumption is 5%; The preferred ZB33 of described zirconium tanning agent, consumption are 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101960065A CN101358253A (en) | 2008-09-10 | 2008-09-10 | Technique for preparing chrome-free tanning and plant-free tanning goat upper leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101960065A CN101358253A (en) | 2008-09-10 | 2008-09-10 | Technique for preparing chrome-free tanning and plant-free tanning goat upper leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101358253A true CN101358253A (en) | 2009-02-04 |
Family
ID=40330852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101960065A Pending CN101358253A (en) | 2008-09-10 | 2008-09-10 | Technique for preparing chrome-free tanning and plant-free tanning goat upper leather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101358253A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168153A (en) * | 2011-03-28 | 2011-08-31 | 杭州奇达皮革有限公司 | Processing method of seawater-proof vamp leather |
| CN102586497A (en) * | 2012-03-13 | 2012-07-18 | 兴业皮革科技股份有限公司 | Process for producing leather |
| CN102703620A (en) * | 2012-06-15 | 2012-10-03 | 宁夏西部皮草有限公司 | Chromium-free tanning production process of low-formaldehyde beach woolskin |
| CN103060490A (en) * | 2013-01-17 | 2013-04-24 | 陕西科技大学 | Tanning method for tanning sheepskin clothing leather by hyperbranched polymer-aluminum salt tanning agent |
| CN103266186A (en) * | 2013-06-17 | 2013-08-28 | 焦作隆丰皮草企业有限公司 | Chrome-free tanning method for sheep shorn velvet |
| CN108284651A (en) * | 2017-03-27 | 2018-07-17 | 李如涛 | Composite material and preparation method thereof |
| CN108690891A (en) * | 2018-05-25 | 2018-10-23 | 安徽新创智能科技有限公司 | A method of preparing leather using waste and old leather shoes leather |
| CN114134259A (en) * | 2021-11-10 | 2022-03-04 | 中牛集团有限公司 | Production process of chrome-free tanning and plant-free tanning sofa leather |
-
2008
- 2008-09-10 CN CNA2008101960065A patent/CN101358253A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168153A (en) * | 2011-03-28 | 2011-08-31 | 杭州奇达皮革有限公司 | Processing method of seawater-proof vamp leather |
| CN102168153B (en) * | 2011-03-28 | 2013-06-19 | 杭州奇达皮革有限公司 | Processing method of seawater-proof vamp leather |
| CN102586497A (en) * | 2012-03-13 | 2012-07-18 | 兴业皮革科技股份有限公司 | Process for producing leather |
| CN102586497B (en) * | 2012-03-13 | 2014-11-19 | 兴业皮革科技股份有限公司 | Process for producing leather |
| CN102703620B (en) * | 2012-06-15 | 2014-05-07 | 宁夏西部皮草有限公司 | Chromium-free tanning production process of low-formaldehyde beach woolskin |
| CN102703620A (en) * | 2012-06-15 | 2012-10-03 | 宁夏西部皮草有限公司 | Chromium-free tanning production process of low-formaldehyde beach woolskin |
| CN103060490A (en) * | 2013-01-17 | 2013-04-24 | 陕西科技大学 | Tanning method for tanning sheepskin clothing leather by hyperbranched polymer-aluminum salt tanning agent |
| CN103060490B (en) * | 2013-01-17 | 2015-02-11 | 陕西科技大学 | Tanning method for tanning sheepskin clothing leather by hyperbranched polymer-aluminum salt tanning agent |
| CN103266186A (en) * | 2013-06-17 | 2013-08-28 | 焦作隆丰皮草企业有限公司 | Chrome-free tanning method for sheep shorn velvet |
| CN103266186B (en) * | 2013-06-17 | 2015-07-01 | 焦作隆丰皮草企业有限公司 | Chrome-free tanning method for sheep shorn velvet |
| CN108284651A (en) * | 2017-03-27 | 2018-07-17 | 李如涛 | Composite material and preparation method thereof |
| CN108690891A (en) * | 2018-05-25 | 2018-10-23 | 安徽新创智能科技有限公司 | A method of preparing leather using waste and old leather shoes leather |
| CN108690891B (en) * | 2018-05-25 | 2020-09-08 | 安徽新创智能科技有限公司 | Method for preparing leather by using waste leather shoe upper leather |
| CN114134259A (en) * | 2021-11-10 | 2022-03-04 | 中牛集团有限公司 | Production process of chrome-free tanning and plant-free tanning sofa leather |
| CN114134259B (en) * | 2021-11-10 | 2023-11-10 | 中牛集团有限公司 | Production process of chrome-free tanning and plant-free tanning sofa leather |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101358253A (en) | Technique for preparing chrome-free tanning and plant-free tanning goat upper leather | |
| CN100381582C (en) | A method for ashless and non-sulfurized alkali liming treatment of pigskin leather | |
| CN105132596B (en) | Production technology of cow skin nappa leather | |
| CN102758029B (en) | Method for chrome-free tanning beach woolfell by adopting chrome-free tanning agent | |
| CN103215391B (en) | Non-chromium leather tanning method | |
| CN103589812B (en) | A kind of preparation method of oily wax water dye soft leather | |
| CN104789715B (en) | A short-process chrome-less tanning method without salt and pickling | |
| CN103060488A (en) | Environment-friendly type crust leather production method | |
| CN105925735B (en) | One kind is salt-free to exempt from pickling short route bating method without chrome | |
| CN102703620A (en) | Chromium-free tanning production process of low-formaldehyde beach woolskin | |
| CN101509045A (en) | Sodium sulfide-free, lime-free depilation caustic dip method for lining leather of high-grade pig leather shoes | |
| CN103773906B (en) | Integrated water saving method for leather-making | |
| CN101265505A (en) | A kind of ash-free, non-sulfurized alkali-free dehairing and liming treatment method for sheep leather | |
| CN101265506B (en) | Ashless and alkali sulfide free depilation liming treatment method for preparing leather from goatskin | |
| CN101358254A (en) | Technique for preparing goat chrome-free tanning upper leather | |
| CN103397116A (en) | Tanning method of Tan sheep fur | |
| CN104673943A (en) | Method for manufacturing environment-friendly ecological tanned lamb skin | |
| CN101381782A (en) | A method for tanning ultra-thin sheep clothing leather with non-chrome metal complex tanning agent | |
| CN108950100B (en) | Production process of original thick environment-friendly shrunk-pattern cattle leather | |
| CN115216565A (en) | Integrative chrome-free tanning method for Tan lamb fur leather | |
| CN105316437A (en) | Production process of environment-friendly cattle hide mattress | |
| CN1213151C (en) | Tanning method for fish skin and after finishing method for fish skin leather | |
| CN109097510B (en) | Method of making mercerized leather by one dyeing | |
| CN112538551B (en) | Production method of color shoe embryonic leather | |
| CN103555866A (en) | Ecological automobile leather manufacturing method by adopting novel enzyme unhairing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090204 |